We don't currently have the ability to print metallics or foils on our boxes.
We use digital CMYK printing processes -- this means all of the color going onto your box is created using CMYK (Cyan, Magenta, Yellow, and blacK) inks. If you have areas in your design that are "white," those are areas that will not be printed, leaving the color of the box material you've chosen (Kraft brown or white) to show through in those places.
While White ink was a limited-edition Holiday option between 11/01/18-12/31/18, it is no longer available as a standard product. However, we're happy to quote a white ink order as a special project with a minimum quantity of just 1 box! Please reach out to our support team to get started. :)
Not sure how to set up your special White Ink order? Search "White Ink" in our support portal for a list of helpful solutions, or click on our Chat bubble in the lower right corner for immediate assistance :)